diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_remquol.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/s_remquol.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_remquol.c b/sysdeps/ieee754/ldbl-128ibm/s_remquol.c deleted file mode 100644 index 9b6ec09d41..0000000000 --- a/sysdeps/ieee754/ldbl-128ibm/s_remquol.c +++ /dev/null @@ -1,119 +0,0 @@ -/* Compute remainder and a congruent to the quotient. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997 and - Jakub Jelinek <jj@ultra.linux.cz>, 1999. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <math.h> - -#include <math_private.h> -#include <math_ldbl_opt.h> - - -static const long double zero = 0.0; - - -long double -__remquol (long double x, long double y, int *quo) -{ - int64_t hx,hy; - u_int64_t sx,lx,ly,qs; - int cquo; - double xhi, xlo, yhi, ylo; - - ldbl_unpack (x, &xhi, &xlo); - EXTRACT_WORDS64 (hx, xhi); - EXTRACT_WORDS64 (lx, xlo); - ldbl_unpack (y, &yhi, &ylo); - EXTRACT_WORDS64 (hy, yhi); - EXTRACT_WORDS64 (ly, ylo); - sx = hx & 0x8000000000000000ULL; - qs = sx ^ (hy & 0x8000000000000000ULL); - ly ^= hy & 0x8000000000000000ULL; - hy &= 0x7fffffffffffffffLL; - lx ^= sx; - hx &= 0x7fffffffffffffffLL; - - /* Purge off exception values. */ - if (hy == 0) - return (x * y) / (x * y); /* y = 0 */ - if ((hx >= 0x7ff0000000000000LL) /* x not finite */ - || (hy > 0x7ff0000000000000LL)) /* y is NaN */ - return (x * y) / (x * y); - - if (hy <= 0x7fbfffffffffffffLL) - x = __ieee754_fmodl (x, 8 * y); /* now x < 8y */ - - if (((hx - hy) | (lx - ly)) == 0) - { - *quo = qs ? -1 : 1; - return zero * x; - } - - x = fabsl (x); - y = fabsl (y); - cquo = 0; - - if (hy <= 0x7fcfffffffffffffLL && x >= 4 * y) - { - x -= 4 * y; - cquo += 4; - } - if (hy <= 0x7fdfffffffffffffLL && x >= 2 * y) - { - x -= 2 * y; - cquo += 2; - } - - if (hy < 0x0020000000000000LL) - { - if (x + x > y) - { - x -= y; - ++cquo; - if (x + x >= y) - { - x -= y; - ++cquo; - } - } - } - else - { - long double y_half = 0.5L * y; - if (x > y_half) - { - x -= y; - ++cquo; - if (x >= y_half) - { - x -= y; - ++cquo; - } - } - } - - *quo = qs ? -cquo : cquo; - - /* Ensure correct sign of zero result in round-downward mode. */ - if (x == 0.0L) - x = 0.0L; - if (sx) - x = -x; - return x; -} -long_double_symbol (libm, __remquol, remquol); |